Most dealers ARE deceitful
Most dealers ARE deceitful and misleading unless you are very, very savvy. I've
bought 100 new cars in my life and I never had a single dealer not try to trick me into something -- each time I caught them. In one case, a dealer paid dearly. A dealer tried to show my rebate as a discount they offered. I knew better. When they tried to unwind the deal, I wouldn't let them. So in the end they had to pay the rebate AND apply my rebate as a separate discount -- it backfired on them.